regex on nested object key to filter list python

I have an array of objects like below:

my_objects = [
    {"id": 1, "labels": {"abc": "123"}},
    {"id": 2, "labels": {"prefix-abc": "123"}},  
    {"id": 3, "labels": {"prefix-abc": "123"}},  
    {"id": 4, "labels": {"xyz-abc": "123"}},  
]

I want to be able to filter down to objects that don’t have a key in labels that match prefix-.

What I’d end up with is:

filtered = [
    {"id": 1, "labels": {"abc": "123"}}, 
    {"id": 4, "labels": {"xyz-abc": "123"}},  
]

At the moment I have a working solution but not sure if its the most efficient:

for thing in my_objects:
    labels = thing.get("labels", {})
    for key in labels.keys():
        if "prefix-" in key:
             # handle

Answer

Here is a possible solution:

filtered = [obj for obj in my_objects
            if not any(lab.startswith('prefix-') for lab in obj['labels'])]